B = 12 - a
Subtract a from both sides to isolate b, and you get the answer.
F(1) = 2
f(2) = -5f(2-1) = -5f(1) = -5(2) = -10
f(3) = -5f(3-1) = -5f(2) = -5(-10) = 50
So, f(4) = ?
Im so sorry if this is wrong, I think it is C or B. Please tell me if its wrong! Good luck in math!
